Removable, leather-covered footbed offers a uniquely custom fit. Wolky exclusive Genuine leather upper upholds Wolky�s strong commitment to top-quality materials that hold strong (and comfy) mile after mile. Full leather lining provides a smooth feel and lasting durability. Lightweight polyurethane outsoles offers durability and flex while also absorbing shock. Adjustable, hook-and-loop instep strap creates a snug fit that�s comfortable for all different arch heights.